Coffee-roaster.



J. TRBMOULHAG.

COFFEE ROAS'I'ER. APPLICATION FILED MAY 3, 1911.

1,064,943. Patented June 17, 1913.

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JOSEPH TREMOULHAG, OF S'IHE T IENNE, FRANCE.

corrnn-noasrnn To all whom it may concern Be it known that l, Josnrrr TREM'OULHAC, a citizen of the French Republic, residing at hit-lltienne, in the Republic of France, have invented certain new and useful Improve ments in Cofl'celtoasters, of which the following is a specification.

This invention relates to coffee roaster with automatical action and for household use.

in the accon'i mnying drawings the improved apparatus is shown by way of ex ample.

Figure l is an elevation of the apparatus partly in longitudinal section. F 2 is a plan view, the lid of the casing as well as the roasting drum being removed. Fig. 3 is a cross section on the line 1-1 of Fig. 2. Fig. at represents the clockwork for driving the roasting drum. Figs. 5 and G are respectively an elevation and a plan of a governor connected with said clockwork. Fig. 7 shows an apparatus similar to that shown in Fig. 5 but without centrifugal balls. Fig. 8 shows on a larger scale one of the lateral arms of the heating device.

The mechanism for driving the roasting drum can consist of a clockwork such as shown, by way of example, in the accompanying drawings. The winding up of the clockwork is effected by means of the crank handle a mounted upon the shaft 7) on which the spur wheel. 0 and the pinion (Z are keyed. This pinion (Z meshes with a pinion keyed upon the shaft 0 on which the spring f is mounted. A locking mechanism 9 fixed against the wheel 0 insures the rotation of the shaft 7) when the spring is unwinding said revolving motion being communicated by the pinion 7L to the roasting drum 71 mounted upon the shaft j. The revolving motion is further transmitted by suitable gearing to a worm 71: carried by the vertical axle 70 upon which a fly wheel Z is mounted.

Upon the axle there are further mounted the blades m which are movable on their hubs in order to adopt either a vertical position or a horizontal position for acting upon the red at. These movable blades serve for varyingthe revolving speed according to their position.

The roasting drum 2' which is made of very thin sheet-copper may have the shape represented in the drawing; it has inner extensions or ribs 2" which serve for better mixing the coffee grains during the rotation Specification of Letters Patent.

Application filed May 3, 1911.

Patented June 17, 1913.

Serial No. 624,764.

of the drum. The lid 0 of the roasting drum has openings 0 through which the vapors escape which are generated by the roasting. The lid 0 is mounted upon a shaft p the end of which is split so that it acts like a spring and is inserted in the hollow end of the axle j whereby the shaft of the roasting drum is completed. The arrangement of the lid as described facilitates the filling in and the removal of the coffee.

The roasting drum is supported onthe one hand by a blade spring 1 bearing against the end wall of the metal casing s and 011 the other hand by an upright t fixed upon the base plate a of the apparatus. Under the roasting drum a heating device 4: is mounted upon said base plate a. The lamp or heating device Q) has two lateral elastic arms a which have holes and are pushed over the upright If so that said heating de vice can be maintained at any suitable position.

The upper ends of the blade spring 9 and of the upright t are slit in order to facilitate the removal of the roasting drum. Wooden handles a" fixed upon the shaft of said drum protect the hands of the operator from the heat.

The governor or regulating device can be constructed either as shown in Figs. 5 and 6 or as shown in Fig. 7. Upon the shaft 0 the centrifugal balls 7: of the governor are movably mounted in the Well known manner so that they can move away from said shaft when its speed increases, lifting at the same time the friction cone is. The friction brake c acting upon the said friction cone 70 limits the movement of the centrifugal governor its position No. 1 corresponding to the slow speed and that No. 2 to the high speed. In the position No. 3 the friction cone is stopped by means of the friction arm k carried by the shaft 71: and adapted to be regulated by the hand knob is. Fig. 7 represents a similar governor without centrifugal balls, the friction cone 7:: being submitted to a more or less energetic friction of the friction arm 72 mounted upon the threaded spindle is.

This apparatus can be made in different forms and dimensions according to the efiiciency to be obtained.

I claim An improved coffee roaster for household use with automatic operation comprising in combination a casing having a base plate, a

heating device upon the base plate of said easing a roasting drum removably mounted in the casing aboYe said heating device a standard upon said base plate having a bearing at its top, the shaft of said roasting drum eomposed oi two removably connected parts mounted in the bearing of said standard, a removable lid of said roasting drum fixed to one of said parts of the shaft, a clockwork mounted in said casing and servdrum, blades movable on their hub mounted upon the shaft of the clockwork a centrifu- -gal governor for regulating the speed of the ernor, substantially as described and shown and for the purpose set forth.

In. witness whereof I have hereunto set my handin thepresence of two witnesses. JOSEPH TREMOULHAC. itnesses LOUIS SARNIN, JIBERT JEAN MARIE.

'Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Batents,

Washington, D. C. 

